all: run golangci-lint fmt happy

[zchee]

Format import section

$ go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest fmt

[gemini-code-assist[bot]]

Summary of Changes

Hello @zchee, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request integrates gofumpt into the golangci-lint configuration, standardizing code formatting across the Go codebase. The changes primarily involve updating the .golangci.yml file with new formatter settings and applying these new formatting rules, particularly to import statements, across a wide range of Go source files. Additionally, it includes several minor code style refinements and corrections to ensure better consistency and readability.

Highlights

• Code Formatting Enforcement: The golangci-lint configuration has been updated to include gofumpt as an enabled formatter, alongside goimports. This introduces stricter and more opinionated formatting rules for Go code.
• Formatter Settings: Specific settings have been added for both goimports and gofumpt within the .golangci.yml file. goimports now uses google.golang.org/adk as a local prefix, and gofumpt is configured with extra-rules: true and a module-path.
• Import Statement Reordering: Numerous Go files across the repository have had their import statements reordered and grouped to comply with the new gofumpt and goimports rules, ensuring consistent import block formatting.
• Code Style and Readability Improvements: Minor code style adjustments were made, including grouping multiple var _ Interface = (*Struct)(nil) declarations into single var (...) blocks, simplifying function signatures (e.g., args map[string]any, result map[string]any to args, result map[string]any), and removing extraneous blank lines.
• Octal Literal Correction: File permission octal literals used in os.WriteFile calls were updated from 0600 to 0o600 and 0666 to 0o666 for explicit octal representation.
• Explicit Return Statements: Return statements in ExtractStateDeltas and extractStateDeltas functions were made explicit to improve clarity.

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[zchee]

@dpasiukevich Fixed. PTAL.

[zchee]

@dpasiukevich Resolve conflict. PTALA.